'Sand' in the Bible

So the dragon became enraged at the woman and went away to make war on the rest of her children, those who keep God's commandments and hold to the testimony about Jesus. And the dragon stood on the sand of the seashore.

and will go out to deceive the nations at the four corners of the earth, Gog and Magog, to bring them together for the battle. They are as numerous as the grains of sand in the sea.